Semisub was developed to design, build, own, sell, and operate a fleet of semi-submersible vessels for tourist locations worldwide. The planned location for its flagship vessel, Semisub One, is Kewalo Basin Harbor in Honolulu, Hawaii.

Semisub was developed to design, build, own, sell, and operate a fleet of semi-submersible vessels for tourist locations worldwide. The planned location for its flagship vessel, Semisub One, is Kewalo Basin Harbor in Honolulu, Hawaii.